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Texas Instruments ADS8862IDRCT
- Part No.:
- ADS8862IDRCT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ADS8862IDRCT.pdf
- Description:
- IC ADC 16BIT SAR 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:141
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Product details
Overview
ADS8862IDRCT from Texas Instruments is a 16-bit, 680-kSPS single-ended SAR analog-to-digital converter with SPI-compatible serial interface, 93 dB SNR, ±2.0 LSB max INL, and 4.2 mW power dissipation at full speed-designed for precision data acquisition in battery-powered instrumentation.
For engineers reviewing the ADS8862IDRCT datasheet, ADS8862IDRCT pinout, ADS8862IDRCT application, or ADS8862IDRCT equivalent, key selection factors include unipolar input range (0 V to VREF), independent AVDD/DVDD/REF supply domains, daisy-chain capability, and 540 ns full-scale settling-critical for low-latency, high-accuracy sampling in portable test equipment and medical sensors.
Technical Context
The ADS8862IDRCT implements a successive approximation register (SAR) architecture with no pipeline latency, delivering deterministic conversion timing (500–930 ns) and immediate output availability. Its reference input (2.5 V to 5 V) operates independently of AVDD (2.7 V to 3.6 V) and DVDD (1.65 V to 3.6 V), enabling flexible signal scaling without external amplifiers.
It supports three SPI interface modes-3-wire CS, 4-wire CS, and daisy-chain-with optional busy-indicator bit synchronization. The device achieves 16-bit NMC performance and maintains ±1.0 LSB typical DNL across –40°C to +85°C, verified under AVDD = 3 V, DVDD = 3 V, and VREF = 5 V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit-guarantees monotonic output and no missing codes (NMC) over full temperature range. |
| Sample rate | 680 kSPS-enables real-time capture of signals up to ~30 MHz small-signal bandwidth with 93 dB SNR. |
| INL (max) | ±2.0 LSB-limits end-point error to ≤±0.003% FSR, supporting 16-bit accuracy in closed-loop control. |
| Power @ 680 kSPS | 4.2 mW-achieved with 1.4 mA AVDD current at 3 V, enabling ultra-low-power operation in energy-constrained systems. |
| Reference range | 2.5 V to 5 V-allows direct interfacing to common voltage references without level-shifting or gain adjustment. |
| Settling time | 540 ns to 16-bit-ensures full-scale step response meets timing budget for high-speed multiplexed acquisition. |
| ESD rating | ±2000 V HBM-meets industrial IEC 61000-4-2 system-level robustness requirements without added protection. |
Pinout & Package
The ADS8862IDRCT is housed in a 10-pin VSON package (DRC), 3.0 mm × 3.0 mm body size, with exposed thermal pad recommended for PCB ground connection. Pin functions are electrically validated per TI SBAS570B Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF | Analog reference input | Accepts 2.5 V–5 V external reference; decoupled with ≥10 µF capacitor; independent of AVDD voltage domain. |
| AINP | Analog input (+) | Single-ended unipolar input node; valid range –0.1 V to VREF + 0.1 V; 59 pF input capacitance affects anti-alias filter design. |
| AINN | Analog input (–) | Ground-referenced return path for AINP; internally tied to GND; enables true single-ended operation without differential driver. |
| AVDD | Analog supply | 2.7 V–3.6 V analog rail; powers core SAR and reference buffer; requires 1-µF local decoupling to GND. |
| DVDD | Digital supply | 1.65 V–3.6 V I/O supply; powers SPI interface; independent of AVDD-supports mixed-voltage host systems. |
| GND | Common ground | Shared analog/digital reference plane; internal connection point for REF return and thermal pad (DRC package). |
| CONVST | Convert start / CS | Edge-triggered conversion initiator; doubles as chip select in 3-wire mode; 10 ns minimum pulse width required. |
| DIN | Serial data input | Configures interface mode (CS vs daisy-chain) at conversion start; CMOS-compatible with DVDD-referenced thresholds. |
| DOUT | Serial data output | MSB-first SPI output; synchronized to SCLK falling edge; 3-state controlled by CONVST or DIN in 4-wire mode. |
| SCLK | Serial clock input | Up to 66.6 MHz clock; defines data transfer timing; duty cycle tolerance 45%–55%; drives timing-critical acquisition windows. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency output | Immediate data availability after conversion completes-eliminates pipeline delay for time-critical trigger-and-capture applications. |
| SPI daisy-chain support | Enables cascading multiple ADS8862IDRCT devices on one SPI bus without additional GPIOs-reduces host resource usage in multi-channel systems. |
| Independent supply domains | AVDD, DVDD, and REF operate at different voltages simultaneously-simplifies power architecture and avoids level-shifters in mixed-supply designs. |
| Ultra-low power-down current | 50 nA AVDD quiescent current-extends battery life in sleep-mode intervals between measurement bursts. |
| Full-scale step settling | 540 ns to 16-bit accuracy-ensures accurate digitization of fast transients and step inputs without post-processing correction. |
Applications
| Automatic Test Equipment (ATE) | Portable Medical Sensors |
|---|---|
Use Scenario: High-precision voltage measurement in benchtop multimeters and parametric testers requiring sub-LSB repeatability. IC Role / Device Role / Timing Role: Primary ADC capturing DC/low-frequency analog signals with 93 dB SNR and ±2 LSB INL for metrology-grade accuracy. Use Value: Eliminates need for external gain/offset calibration due to <±4 mV offset error and <±0.01% FSR gain error drift. |
Use Scenario: Biopotential signal digitization (ECG, EEG) in handheld diagnostic devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-noise, low-power ADC acquiring conditioned analog front-end outputs with minimal thermal noise contribution. Use Value: 4.2 mW active power and 50 nA power-down current enable >100-hour battery life in intermittent-sampling mode. |
| Industrial Process Monitoring | Low-Power Data Loggers |
Use Scenario: 4–20 mA loop-powered sensor interface where supply headroom is limited and EMI immunity is critical. IC Role / Device Role / Timing Role: Isolated analog input digitizer operating from 3.3 V AVDD with 2.5 V reference, rejecting supply ripple via 80 dB PSRR. Use Value: Independent REF and AVDD domains allow use of stable 2.5 V shunt reference even when AVDD sags to 2.7 V during brownout. |
Use Scenario: Environmental monitoring nodes logging temperature, pressure, and humidity using microcontroller-based acquisition. IC Role / Device Role / Timing Role: SPI-connected ADC triggered by MCU timer interrupts, delivering 16-bit samples at 10–100 kSPS with 0.6 mW power draw. Use Value: Programmable throughput scaling (60 µW @ 10 kSPS) matches processing load and extends deployment duration without firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8864IDRCT | 4-channel, pseudo-differential input; same 680 kSPS, 16-bit resolution, but shares reference and AVDD domains across channels. | Better suited for multi-sensor simultaneous sampling; requires shared reference routing and higher channel-count layout complexity. | Select when acquiring ≥2 analog signals with tight inter-channel timing alignment; not drop-in-requires PCB redesign for channel routing. |
| AD7960BCPZ | 18-bit, 5 MSPS, differential input; uses LVDS interface; consumes 34 mW at full speed; requires external reference and driver amplifier. | Targets higher-resolution, higher-throughput applications like ultrasound beamforming; incompatible SPI interface and supply scheme. | Choose for applications needing >16-bit ENOB or >1 MSPS; avoid if board space, power, or SPI compatibility are constraints. |
Compared with ADS8864IDRCT and AD7960BCPZ, the ADS8862IDRCT offers optimal balance of single-channel precision, ultra-low power, and SPI simplicity-making it ideal for cost-sensitive, battery-operated instruments where 16-bit fidelity and minimal BOM count are prioritized over multi-channel density or raw speed.
Availability
ADS8862IDRCT is available at Aetrix Electronics and suitable for automatic test equipment, portable medical sensors, and industrial process monitors requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS8862IDRCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade IC design.
The ADS8862IDRCT belongs to TI's precision SAR ADC portfolio, engineered specifically for low-power, high-accuracy signal acquisition in portable, battery-operated, and space-constrained instrumentation systems.
FAQ
What is the maximum supported SCLK frequency for the ADS8862IDRCT?
The ADS8862IDRCT supports SCLK frequencies up to 66.6 MHz in all interface modes (3-wire, 4-wire, and daisy-chain), with minimum SCLK period of 15 ns and 45%–55% duty cycle requirement. This allows high-speed data transfers while maintaining timing margins for reliable communication with microcontrollers and FPGAs. The ADS8862IDRCT datasheet specifies these limits under recommended operating conditions with AVDD = 3 V and DVDD = 3 V.
Does the ADS8862IDRCT require an external reference voltage?
Yes, the ADS8862IDRCT requires an external reference voltage applied to the REF pin, which must be in the range of 2.5 V to 5 V. The device does not include an internal reference, and REF operates independently of AVDD and DVDD supplies. A minimum 10 µF decoupling capacitor is required at the REF pin to ensure stability and low-noise performance. This design gives system designers full flexibility to select precision references matching their accuracy and temperature drift requirements.
Can the ADS8862IDRCT operate with different analog and digital supply voltages?
Yes, the ADS8862IDRCT supports independent analog (AVDD: 2.7 V–3.6 V) and digital (DVDD: 1.65 V–3.6 V) supply rails, enabling interoperability with modern low-voltage microcontrollers and FPGAs. This separation eliminates level-shifting circuitry and simplifies power sequencing. The ADS8862IDRCT maintains full 16-bit performance across its specified AVDD and DVDD ranges, with verified AC/DC specifications at AVDD = 3 V and DVDD = 3 V per the official datasheet.
What interface modes does the ADS8862IDRCT support?
The ADS8862IDRCT supports three SPI-compatible interface modes: 3-wire (CONVST as chip select), 4-wire (DIN as chip select), and daisy-chain (for cascading multiple devices). All modes support MSB-first, read-only data transfer synchronized to SCLK falling edge. An optional busy-indicator bit aids host synchronization. Mode selection is determined by the DIN logic level at the start of conversion, and timing parameters are fully specified for each mode in the ADS8862IDRCT datasheet.
Is the ADS8862IDRCT pin-compatible with other devices in the ADS886x family?
The ADS8862IDRCT shares the same 10-pin VSON (DRC) and VSSOP (DGS) packages with ADS8860–ADS8867, but pin functions differ across variants-especially for input configuration (single-ended vs pseudo-differential) and channel count. For example, ADS8864 uses AIN0–AIN3 pins instead of AINP/AINN. Therefore, ADS8862IDRCT is not pin-compatible with other ADS886x parts; PCB layout must be specific to its single-ended, single-channel signal path and pin mapping.
ADS8862IDRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 680k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-VSON (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8862IDRCT FAQ
1.How can I place an order for ADS8862IDRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8862IDRCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS8862IDRCT reliable?
The price and inventory of ADS8862IDRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8862IDRCT is usually 5 days.
3.What payment methods are accepted for ADS8862IDRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8862IDRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8862IDRCT?
ADS8862IDRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8862IDRCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS8862IDRCT?
For technical support, including ADS8862IDRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8862IDRCT requirements.
6.How does Aetrix verify that ADS8862IDRCT is sourced from the original manufacturer or authorized distributors?
All ADS8862IDRCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS8862IDRCT meets industry standards.
7.What is the process for return or replacement of ADS8862IDRCT?
All ADS8862IDRCT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8862IDRCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS8862IDRCT part is unused and in its original packaging.
Return procedure for ADS8862IDRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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